People have installed numerous items on their Prius', with results left up in the air (some from personal experience, others from scientific, but not scientific from a reliable source). I really have to wonder what is the big issue with the red bullet? It's gotten to the point that some wish to call those who have purchased it idiots and those who haven't champions to "superior intelligence". Does the Injen really work? or is it just for show? For me, I really don't care. I think it looks cool. If it does work on someone's car, I can't really say it didn't, especially if I don't have one. My point is, to each his own. The red bullet has caused such a storm of dissagreement. So ridiculous. I have to ask, do certain people in here hate blacks? or maybe Asians? Is that the underlying issue? As a person who has read these threads I am begining to wonder. The red bullet is the only one that seems to hit really hard from a cultural standpoint. I hope I am off track here, but one has to wonder.